How do you solve 8( r - 8) + 4r = - 1368(r8)+4r=136?

1 Answer
Apr 12, 2018

r=-6r=6

Explanation:

8(r-8)+4r=-1368(r8)+4r=136 (Distribute 8 to the number in braces)

8r-64+4r=-1368r64+4r=136 (Combine like terms)

12r-64=-13612r64=136 (Add 64 to both sides)

12r=-7212r=72 (Divide both sides by 12)

r=-6r=6

Check the answer by plugging into the original equation:

8(-6-8)+4(-6)=-1368(68)+4(6)=136

8(-14)-24=-1368(14)24=136

-112-24=-13611224=136

-136=136136=136